What is a fistula?

A fistula is defined as an abnormal tubelike passage that forms between two organs or vessels that normally do not communicate. This can occur in various parts of the body and is often a result of disease, infection, surgery, or injury. The pathological connection that a fistula creates allows for fluids, such as blood or digestive juices, to pass through openings that would not typically be connected, which can lead to complications or further medical issues.

Understanding what constitutes a fistula helps healthcare professionals identify and treat the underlying issues that may lead to its development, as well as the fistula itself. This information is pertinent across multiple fields in medicine, including gastroenterology, urology, and surgery.

In contrast, the other terms do not correctly define a fistula. An entry point for medical instruments pertains to surgical procedures, a type of skin infection usually refers to conditions like cellulitis or abscesses, and a symptom of arthritis is typically joint pain or stiffness, none of which accurately describe the concept of a fistula.